/* Copyright [yyyy] [name of copyright owner]
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
/**
 * 
 */
package de.consolewars.android.app.view;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.SeekBar;

/**
 * @author Alexander Dridiger
 * 
 */
public class VerticalSeekBar extends SeekBar {

	public VerticalSeekBar(Context context) {
		super(context);
	}

	public VerticalSeekBar(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	public VerticalSeekBar(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	protected void onSizeChanged(int w, int h, int oldw, int oldh) {
		super.onSizeChanged(h, w, oldh, oldw);
	}

	@Override
	protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
		super.onMeasure(heightMeasureSpec, widthMeasureSpec);
		setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
	}

	protected void onDraw(Canvas c) {
		c.rotate(-90);
		c.translate(-getHeight(), 0);

		super.onDraw(c);
	}

	@Override
	public boolean onTouchEvent(MotionEvent event) {
		if (!isEnabled()) {
			return false;
		}

		switch (event.getAction()) {
		case MotionEvent.ACTION_DOWN:
		case MotionEvent.ACTION_MOVE:
		case MotionEvent.ACTION_UP:
			setProgress(getMax() - (int) (getMax() * event.getY() / getHeight()));
			onSizeChanged(getWidth(), getHeight(), 0, 0);
			break;

		case MotionEvent.ACTION_CANCEL:
			break;
		}
		return true;
	}
}
